<template>

	<view class="goods-item">
		<!-- 左侧 -->
		<view class="goods-item-left">
			<!-- 使用 v-if 指令控制 radio 组件的显示与隐藏 -->
			<radio v-if="showRadio" :checked="goods.goods_state" color="#C00000" @click="radioChange" />
			<image :src="goods.goods_small_logo || defaultPic" mode="" class="goods-img"></image>
		</view>
		<!-- 右侧 -->
		<view class="goods-item-right">
			<view class="goods-name">
				{{goods.goods_name}}
			</view>
			<view class="goods-info">
				<view class="goods-price">
					￥ {{goods.goods_price | tofixed}}
				</view>
				<!-- 使用 v-if 指令控制 组件的显示与隐藏 -->
				<uni-number-box v-if="showNum" :min="1" :value="goods.goods_count" @change="changeNum">
				</uni-number-box>
			</view>
		</view>
	</view>

</template>

<script>
	export default {
		props: {
			goods: {
				type: Object,
				default: {}
			},
			// 是否展示图片左侧的 radio
			showRadio: {
				type: Boolean,
				// 如果外界没有指定 show-radio 属性的值，则默认不展示 radio 组件
				default: false,
			},
			// 是否展示计数框
			showNum: {
				type: Boolean,
				// 则默认不展示
				default: false,
			}
		},
		name: "my-goods",
		data() {
			return {
				// 默认的空图片
				defaultPic: 'https://img3.doubanio.com/f/movie/8dd0c794499fe925ae2ae89ee30cd225750457b4/pics/movie/celebrity-default-medium.png',
			};
		},
		created() {
			// console.log(this.goods);
		},
		// 过滤器
		filters: {
			// 把数字处理为带两位小数点的数字
			tofixed(num) {
				return Number(num).toFixed(2)
			}
		},
		methods: {
			radioChange() {
				// 通过 this.$emit() 触发外界通过 @ 绑定的 radio-change 事件，
				// 同时把商品的 Id 和 勾选状态 作为参数传递给 radio-change 事件处理函数
				this.$emit('radio-change', {
					// 商品的 Id
					goods_id: this.goods.goods_id,
					// 商品最新的勾选状态
					goods_state: !this.goods.goods_state
				})
			},
			changeNum(v) {
				// console.log(v)
				this.$emit('change-num', {
					goods_id: this.goods.goods_id,
					goods_count: +v // 保证为number：+v 或者 v - 0
				})
			}
		}
	}
</script>

<style lang="scss">
	.goods-item {
		// 让 goods-item 项占满整个屏幕的宽度
		width: 750rpx;
		// 设置盒模型为 border-box
		box-sizing: border-box;
		display: flex;
		padding: 10px 5px;
		border-bottom: 1px solid #f0f0f0;

		.goods-item-left {
			margin-right: 5px;
			display: flex;
			justify-content: space-between;
			align-items: center;

			.goods-img {
				width: 100px;
				height: 100px;
				display: block;
				margin-right: 5px;
			}
		}

		.goods-item-right {
			display: flex;
			flex: 1; // 占满
			flex-direction: column;
			justify-content: space-between;

			.goods-name {
				font-size: 13px;
			}

			.goods-info {
				display: flex;
				justify-content: space-between;
				align-items: center;

				.goods-price {
					color: #C00000;
					font-size: 16px;
				}
			}
		}

	}
</style>
